Combined-demand screen is not a code pass

A steel member has $P_u=800\text{ kN}$, a reported axial design strength of $2{,}000\text{ kN}$, $M_u=150\text{ kN·m}$, and a reported flexural design strength of $300\text{ kN·m}$.

Review a code-check result instead of memorizing one historic interaction equation

STAAD reports a steel member utilization of $1.08$ for the selected design standard and identifies the governing interaction/stability clause.

Simplified RC flexural mechanics screen

A $300\text{ mm}$ wide beam with effective depth $d=450\text{ mm}$ carries a factored teaching moment $M_u=250\text{ kN·m}$. A quick screen uses a supplied lever-arm assumption $z=0.9d$, $f_y=420\text{ MPa}$, and an explicitly supplied teaching factor $\phi=0.90$.

Convert required steel into discrete bars

Using a teaching requirement of $A_s=1{,}633\text{ mm}^2$, test 20 mm bars.

Section checking vs section selection

A trial steel section fails the configured code check. What should an automated section-selection workflow be expected to do?

Use design-result colors as navigation, not engineering meaning

A post-processing view color-codes members by a design result.